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| 1 | +/* | |
| 2 | + * Copyright (c) 1995, 2004, Oracle and/or its affiliates. All rights reserved. | |
| 3 | + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 | + * | |
| 5 | + * This code is free software; you can redistribute it and/or modify it | |
| 6 | + * under the terms of the GNU General Public License version 2 only, as | |
| 7 | + * published by the Free Software Foundation. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | +package sun.tools.java; | |
| 27 | + | |
| 28 | +import java.util.Enumeration; | |
| 29 | +import java.io.File; | |
| 30 | +import java.io.IOException; | |
| 31 | + | |
| 32 | +/** | |
| 33 | + * This class is used to represent the classes in a package. | |
| 34 | + * | |
| 35 | + * WARNING: The contents of this source file are not part of any | |
| 36 | + * supported API. Code that depends on them does so at its own risk: | |
| 37 | + * they are subject to change or removal without notice. | |
| 38 | + */ | |
| 39 | +public | |
| 40 | +class Package { | |
| 41 | + /** | |
| 42 | + * The path which we use to locate source files. | |
| 43 | + */ | |
| 44 | + ClassPath sourcePath; | |
| 45 | + | |
| 46 | + /** | |
| 47 | + * The path which we use to locate class (binary) files. | |
| 48 | + */ | |
| 49 | + ClassPath binaryPath; | |
| 50 | + | |
| 51 | + /** | |
| 52 | + * The path name of the package. | |
| 53 | + */ | |
| 54 | + String pkg; | |
| 55 | + | |
| 56 | + /** | |
| 57 | + * Create a package given a class path, and package name. | |
| 58 | + */ | |
| 59 | + public Package(ClassPath path, Identifier pkg) throws IOException { | |
| 60 | + this(path, path, pkg); | |
| 61 | + } | |
| 62 | + | |
| 63 | + /** | |
| 64 | + * Create a package given a source path, binary path, and package | |
| 65 | + * name. | |
| 66 | + */ | |
| 67 | + public Package(ClassPath sourcePath, | |
| 68 | + ClassPath binaryPath, | |
| 69 | + Identifier pkg) | |
| 70 | + throws IOException { | |
| 71 | + if (pkg.isInner()) | |
| 72 | + pkg = Identifier.lookup(pkg.getQualifier(), pkg.getFlatName()); | |
| 73 | + this.sourcePath = sourcePath; | |
| 74 | + this.binaryPath = binaryPath; | |
| 75 | + this.pkg = pkg.toString().replace('.', File.separatorChar); | |
| 76 | + } | |
| 77 | + | |
| 78 | + /** | |
| 79 | + * Check if a class is defined in this package. | |
| 80 | + * (If it is an inner class name, it is assumed to exist | |
| 81 | + * only if its binary file exists. This is somewhat pessimistic.) | |
| 82 | + */ | |
| 83 | + public boolean classExists(Identifier className) { | |
| 84 | + return getBinaryFile(className) != null || | |
| 85 | + !className.isInner() && | |
| 86 | + getSourceFile(className) != null; | |
| 87 | + } | |
| 88 | + | |
| 89 | + /** | |
| 90 | + * Check if the package exists | |
| 91 | + */ | |
| 92 | + public boolean exists() { | |
| 93 | + // Look for the directory on our binary path. | |
| 94 | + ClassFile dir = binaryPath.getDirectory(pkg); | |
| 95 | + if (dir != null && dir.isDirectory()) { | |
| 96 | + return true; | |
| 97 | + } | |
| 98 | + | |
| 99 | + if (sourcePath != binaryPath) { | |
| 100 | + // Look for the directory on our source path. | |
| 101 | + dir = sourcePath.getDirectory(pkg); | |
| 102 | + if (dir != null && dir.isDirectory()) { | |
| 103 | + return true; | |
| 104 | + } | |
| 105 | + } | |
| 106 | + | |
| 107 | + /* Accommodate ZIP files without CEN entries for directories | |
| 108 | + * (packages): look on class path for at least one binary | |
| 109 | + * file or one source file with the right package prefix | |
| 110 | + */ | |
| 111 | + String prefix = pkg + File.separator; | |
| 112 | + | |
| 113 | + return binaryPath.getFiles(prefix, ".class").hasMoreElements() | |
| 114 | + || sourcePath.getFiles(prefix, ".java").hasMoreElements(); | |
| 115 | + } | |
| 116 | + | |
| 117 | + private String makeName(String fileName) { | |
| 118 | + return pkg.equals("") ? fileName : pkg + File.separator + fileName; | |
| 119 | + } | |
| 120 | + | |
| 121 | + /** | |
| 122 | + * Get the .class file of a class | |
| 123 | + */ | |
| 124 | + public ClassFile getBinaryFile(Identifier className) { | |
| 125 | + className = Type.mangleInnerType(className); | |
| 126 | + String fileName = className.toString() + ".class"; | |
| 127 | + return binaryPath.getFile(makeName(fileName)); | |
| 128 | + } | |
| 129 | + | |
| 130 | + /** | |
| 131 | + * Get the .java file of a class | |
| 132 | + */ | |
| 133 | + public ClassFile getSourceFile(Identifier className) { | |
| 134 | + // The source file of an inner class is that of its outer class. | |
| 135 | + className = className.getTopName(); | |
| 136 | + String fileName = className.toString() + ".java"; | |
| 137 | + return sourcePath.getFile(makeName(fileName)); | |
| 138 | + } | |
| 139 | + | |
| 140 | + public ClassFile getSourceFile(String fileName) { | |
| 141 | + if (fileName.endsWith(".java")) { | |
| 142 | + return sourcePath.getFile(makeName(fileName)); | |
| 143 | + } | |
| 144 | + return null; | |
| 145 | + } | |
| 146 | + | |
| 147 | + public Enumeration getSourceFiles() { | |
| 148 | + return sourcePath.getFiles(pkg, ".java"); | |
| 149 | + } | |
| 150 | + | |
| 151 | + public Enumeration getBinaryFiles() { | |
| 152 | + return binaryPath.getFiles(pkg, ".class"); | |
| 153 | + } | |
| 154 | + | |
| 155 | + public String toString() { | |
| 156 | + if (pkg.equals("")) { | |
| 157 | + return "unnamed package"; | |
| 158 | + } | |
| 159 | + return "package " + pkg; | |
| 160 | + } | |
| 161 | +} | |